Corrected bad line breaks in macro definitions within code compiled

Corrected bad line breaks in macro definitions within code compiled
when BEOS_THREADS is defined.  This usually does not cause a problem when
BEOS_THREADS is not defined, but the bad line break in this case put
the "#name" text as the first non-white space in a line, causing the
IRIX C preprocessor to think that it was a preprocessor directive, and
that generated a distracting warning.  I also fixed a couple of other
line breaks that seemed wrong to me.